Avoid Testicular Heat Exposure

For men trying to conceive or bank sperm, limit heat exposure to the groin for roughly one sperm-production cycle (about 60–90 days). That means skipping hot tubs, very hot baths, and prolonged sauna sessions, and avoiding other sources of scrotal heat like seat warmers when possible. The goal is to keep the testes cooler than core body temperature so sperm count, motility, and DNA quality are less likely to be impaired.